I've been playing with this sort of setup recently. I have a K3 with a
KXV3 and an SDRPlay RSP1. For my usage I find that theP3 is a better
option and when I want the display on the PC I have the RSP1 connected
to the P3 IF Out and use the software set to accommodate it is working
at a fixed IF.
I tried connecting the RSP1 with a tee piece and two short pieces of
coax to have a separately tunable third receiver but found a lot of
unwanted responses on the SDR receivers display. Although I did not
investigate very far, switching back to the much more acceptable P3 IF
out technique in short order, I can only presume leakage from the K3 is
the cause.
It could be that I had things 'set wrong' so please feel free to comment
but although an impedance matching splitter might not be a necessity it
seems to me at least that some sort of buffer ahead of the SDR might
well be.
Martin, HS0ZED
On 09/04/2019 03:06, Dave Cole (NK7Z) wrote:
A few months ago someone asked how to move the antenna signal coming
in on the main antenna connector of a K3 to an external SDR via some
connector in the rear of the K3.
The answer indicated connecting the SDR antenna to some connector in
the rear of the radio, and pressing some number of front panel keys to
route the signals from the antenna to the SDR...
Can someone point me at that post, or tell me how this is
accomplished? The RF Signal flow on the K3 has always eluded me.
Also, is the output from the K3 at zero or close to zero when
transmitting? i.e. is it safe for the SDR?
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